Separating the nomenclature from the 3-Series Sedan, the 4-Series is the new name for the 3-Series Coupe (the Convertible will also share the “4” moniker, when it arrives). It has a longer wheelbase, wider track, and lower ride height than the 3er. It looks similar up front, but the squatter, wider stance and touches like the vents behind the wheels (or, as BMW calls them, “Air Breathers”) make the new car look more aggressive and sporty.
